The Gathas are a collection of ancient hymns composed in the Avestan language, which is the sacred language of Zoroastrianism. These texts are attributed to Zoroaster, the founder of the religion, and are considered some of the oldest religious writings in the world. The Gathas express philosophical ideas, ethical teachings, and the nature of the divine. The Gathas are divided into five main sections, each containing verses that reflect Zoroaster's thoughts on life, morality, and the universe. They emphasize the importance of truth, goodness, and the struggle between Ahura Mazda, the supreme god, and Angra Mainyu, the spirit of chaos. These hymns continue to be central to Zoroastrian worship and philosophy.